Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: question: Nomeie a média de votos para um Londres
 ###Tabelas: CREATE TABLE models_and_engines (models_and_engines_id AUTO_INCREMENT PRIMARY KEY, model VARCHAR, max. motive power VARCHAR, max. torque at rpm VARCHAR, engine displacement VARCHAR, engine type VARCHAR, engine configuration & notes 0-100km/h VARCHAR) CREATE TABLE populations (populations_id AUTO_INCREMENT PRIMARY KEY, Country VARCHAR, Orphans as % of all Children INT, AIDS Orphans as % of Orphans INT, Total Orphans (Total) INT, Total Orphans (AIDS Related) VARCHAR, Maternal (Total) INT, Maternal (AIDS Related) VARCHAR, Paternal (Total) INT, Paternal (AIDS Related) VARCHAR, Double (Total) INT, Double (AIDS Related) VARCHAR) CREATE TABLE former_current_professional_teams (former_current_professional_teams_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Sport VARCHAR, League VARCHAR, Played VARCHAR, Class VARCHAR, Championships VARCHAR) CREATE TABLE top-up_additional_member_system_results (top-up_additional_member_system_results_id AUTO_INCREMENT PRIMARY KEY, Party VARCHAR, Votes INT, Share VARCHAR, Change VARCHAR, Seats VARCHAR) CREATE TABLE final_league_position (final_league_position_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Played INT, Draw INT, Lost INT, Goals For INT, Goals Against INT, Goal Difference INT, Points INT)  
SELECT AVG Votes FROM top-up_additional_member_system_results WHERE Party = one london